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प्रश्न
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
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उत्तर
Ammonia gas
संबंधित प्रश्न
The radius of an oxygen atom is 0.073 nm. What does the symbol ‘nm’ represent ?
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Which of the following represents a correct chemical formula ?
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aluminium ………………. .
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cupric ………………… .
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Ethanol
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Write the formula of the following compound:
Aluminium nitrate
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Copper [II] oxide
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Write the chemical formula for the following compounds
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- Silver nitrate
- Magnesium oxide
- Barium chloride
Play a game for writing formula.
Example 2: A low-cost model for writing formulae: Take empty blister packs of medicines. Cut them in groups according to the valency of the element, as shown in the figure. Now, you can make formulae by fixing one type of ion into other.
For example:
The formula for sodium sulphate:
2 sodium ions can be fixed on one sulphate ion.
Hence, the formula will be Na2SO4.
Do it yourself:
Now, write the formula of sodium phosphate.
